Display user details with their average rating in laravel - php

Question

In my case, I have two table like users table and rating table.
In user table, I'm storing user's personal details like name, email etc,
In rating table, I'm storing user_id and rating(rating will be in numbers like 1,2,3,4 and 5)
I have created relationship two tables
here is the relation
//User Model
public function ratings()
{
return $this->hasMany(Rating::class);
}
//Rating model
public function user()
{
return $this->belongsTo(Consultant::class);
}
I can able to display get data with eager loading
$data = User::with('ratings')->get();
The Response I'll get from eager load is
[
{
"id": 1,
"cunsultant_name": "Quincy Jerde",
"contact_number": "882-904-3379",
"ratings": [
{
"user_id": 1,
"rating_for_user": 3
},
{
"user_id": 1,
"rating_for_user": 5
},
{
"user_id": 2,
"rating_for_user": 3
}
]
},
{
"user_name": "Alene Dicki",
"contact_number": "247.604.8170",
"ratings": [
{
"id": 4,
"user_id": 3,
"rating_for_user": 3
}
]
}
]
So how can I get an average rating for every user with eager loading?

Answer 1

To get the average rating with eager loading you can do
$user->ratings()->avg('rating_for_user');

Answer 2

This will always append average_rating field in product. I use morph relation for ratings but you can use any relation appropriate for your situation.
namespace App\Models;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\Relations\BelongsTo;
class Product extends Model
{
protected $guarded = [];
protected $appends = ['average_rating'];
public function ratings()
{
return $this->morphMany(Rating::class, 'rateable');
}
public function getAverageRatingAttribute()
{
return $this->ratings()->average('value');
}
}

Answer 3

You can do it like this,
$data = User::with('ratings')
->join('Rating table','user.id','=','Rating table.user_id')
->select('user.*',DB::raw('avg(rating_for_user)'))
->get();
Modify the code as per your need.
I hope it help.

Answer 4

If you want to get ratings of multiple users you can do like this.
$users = User::where('type', 'instructor')->get();
foreach ($users as $user) {
$user['ratings'] = $user->ratings()->avg('rate');
}
return $users;

Answer 5

You can get avg rating like this,
$product=Products::where('id',$productid);
$data=$product->with('ratings')->get();
foreach($data as $d) {
return $d->ratings->avg('rating');
}
I have added code for product avg rating where two model like below:
Product Model:
<?php
namespace App\Model;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Support\Facades\URL;
class Products extends Model {
protected $table = "products";
public $timestamps = false;
public function ratings()
{
return $this->hasMany("App\Model\Reviews","p_id");
}
}
Review Model:
<?php
namespace App\Model;
use Illuminate\Database\Eloquent\Model;
class Reviews extends Model
{
protected $table = "product_reviews";
public $timestamps = false;
//Rating model
public function products()
{
return $this->belongsTo("App\Model\Products");
}
}